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1. A 100g granite cube slides down a frictionless 38 degreeincline. At the bottom, just after it exits onto a horizontaltable, the granite collides with a 250g steel cube at rest. Howhigh above the table should the granite cube be released to givethe steel cube a speed of 170cm/s? (Answer in cm)
2. A 11.0kg box slides 4.0m down a frictionless30 degree incline, then collides with a spring whose springconstant is 180N/m.a) What is the maximum compression of the spring inmeters?b) At what compression of the spring in centimeters does thebox have its maximum speed?
Suppose we have a cube of resistors (12 resistors total) all the same resistance R connects as in the figure to left. Find the equivalent resistance between the two diagonally opposite corners
What is the force acting on the electron (magnitude and direction) ? What is the electric field (magnitude and direction ) at the point where the electron is located
A hollow spherical conductor, carrying a net charge +Q, has inner radius r[1] and outer radius r[2] = 2r[1]. At the center of the sphere is a point charge +Q/2. (a) Write the electric field strength E in all three regions as a function of r.
A kayaker needs to paddle north across a 100m wide harbor. The tide is going out, creating a tidal current that flows east at 2 m/s. The kayaker can paddle with a speed of 3 m/s.
A grocery cart with mass of 18 kg is pushed at constant speedalong an aisle by force F=12 N. Find the work done by each of the forces on the cart if the aisle is 15 m long
A thin layer of liquid methylene iodide (n = 1.756) is sandwiched between two flat, parallel plates of glass (n = 1.50). What must be the thickness of the liquid layer
A beam of light traveling in air is incident on a transparent plastic material at an angle of incidence of 49°. What is the index of refraction of the plastic
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A 0.14 kg ball is placed in a shallow wedge with an opening angle of 126°. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless.
Two equal point charges repel each other with a force of 5.25 N. If they are separated by 4.0 cm, what is the magnitude of each charge
A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
An outfielder throws a 0.150 kg baseball at a speed of 54.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
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